Etxeberria, Paulo, José Miguel Edeso, and Adolfo Brazaola. 2005. “Metodología Para Crear Mapas De Peligros Naturales En Guipúzcoa Utilizando SIG”. GeoFocus. International Review of Geographical Information Science and Technology, no. 5 (December):250-67. https://geofocus.org/index.php/geofocus/article/view/68.